Abstract
Thermoacoustic engines use heat to produce acoustic power. The subject of this manuscript is modeling of thermoacoustic engines. A finite element simulation has been performed on a theoretical example of a two-dimensional standing wave thermoacoustic engine. The simulation solves the linearized Navier-Stokes equations in the frequency domain. The analysis is used to obtain the (thermo)acoustic eigenfrequencies and the corresponding mode shapes of the engine. The nonlinear eigenfrequency problem is solved using an iterative (modified) Newton-Raphson method. The engine starts to oscillate (onset) when a linear instability is present. An instability can be determined when the imaginary part of an eigenfrequency of the engine crosses zero and becomes negative
Original language | English |
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Title of host publication | Proceedings ICA 2013, Montreal, Canada, 2-7 June 2013, Session 1aEA: Thermoacoustics I |
Place of Publication | Montréal |
Publisher | Acoustical Society of America |
Pages | 1-7 |
Number of pages | 10 |
DOIs | |
Publication status | Published - 2 Jun 2013 |
Event | 21st International Congress on Acoustics, ICA 2013 - Montréal, Montreal, Canada Duration: 2 Jun 2013 → 7 Jun 2013 Conference number: 21 http://www.ica2013montreal.org/ |
Publication series
Name | |
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Publisher | Acoustical Society of America through the American Institute of Physics |
Volume | 19 |
ISSN (Print) | 1939-800X |
Conference
Conference | 21st International Congress on Acoustics, ICA 2013 |
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Abbreviated title | ICA |
Country/Territory | Canada |
City | Montreal |
Period | 2/06/13 → 7/06/13 |
Other | 02-06-2013 |
Internet address |
Keywords
- METIS-296981
- IR-86712